686253827400 has 96 divisors (see below), whose sum is σ = 2252527302240. Its totient is φ = 172236252160.

The previous prime is 686253827333. The next prime is 686253827431. The reversal of 686253827400 is 4728352686.

It is a super-2 number, since 2×686253827400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33629694 + ... + 33650093.

It is an arithmetic number, because the mean of its divisors is an integer number (23463826065).

Almost surely, 2^686253827400 is an apocalyptic number.

686253827400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

686253827400 is an abundant number, since it is smaller than the sum of its proper divisors (1566273474840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686253827400 is a wasteful number, since it uses less digits than its factorization.

686253827400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67279823 (or 67279814 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 686253827400 in words is "six hundred eighty-six billion, two hundred fifty-three million, eight hundred twenty-seven thousand, four hundred".